Pip­ing of Ma­chiner­ies and Pack­ages

DEMM Engineering & Manufacturing - - MAINTENANCE MATTERS -

Pip­ing can be a sig­nif­i­cant part of many ma­chiner­ies, equip­ment, fa­cil­i­ties and pack­ages; the de­sign, anal­y­sis, in­stal­la­tion and of op­er­a­tion of pip­ing of ma­chiner­ies/ pack­ages can in­volve the ap­pli­ca­tion of a num­ber of codes and stan­dards as well as many rules of thumbs.

This pa­per pro­vides the en­gi­neers a prac­ti­cal un­der­stand­ing of the pip­ing de­sign, anal­y­sis and in­stal­la­tion. Pip­ing com­po­nents, pip­ing sys­tem de­sign, ma­te­rial con­sid­er­a­tions, fabri­ca­tion, ex­am­i­na­tion and test­ing should be con­sid­ered prop­erly for any ma­chin­ery or pack­age pip­ing; at­ten­tion is needed for de­sign loads for pip­ing, pip­ing flex­i­bil­ity anal­y­sis, branch re­in­force­ment cal­cu­la­tions, and tem­per­a­ture con­sid­er­a­tions. Proper con­sid­er­a­tions are also re­quired for pip­ing com­po­nent stan­dards, ex­pan­sion loops, ex­pan­sion joint ap­pli­ca­tions, pip­ing noz­zle–equip­ment load re­quire­ments in var­i­ous stan­dards. The fo­cus should be on de­sign and anal­y­sis re­quire­ments, but also prac­ti­cal as­pects of pip­ing dur­ing fabri­ca­tion, in­stal­la­tion, com­mis­sion­ing and op­er­a­tion need to be con­sid­ered. There are many dif­fer­ent flange stan­dards to be found world­wide. To al­low easy func­tion­al­ity and in­ter-change­abil­ity, th­ese are de­signed to have stan­dard­ized di­men­sions. Most com­mon world flange stan­dard is ANSI/ASME (ASME B16.5 or ASME B16.47). There have been other flange stan­dards which have been used in much smaller scales, such as PN/ DIN (some Euro­pean coun­ties), BS10 (Bri­tish), and JIS/KS (Ja­panese). For some ma­chiner­ies/pack­ages the pip­ing in­side pack­age might be as per th­ese flange stan­dards, but the bat­tery lim­its and plant pip­ing is most likely as per ANSI/ASME. Many of the flanges in each stan­dard are

Newspapers in English

Newspapers from New Zealand

© PressReader. All rights reserved.